(see related)(ANSA) - Rome, June 5 - Anti-establishment 5-Star Movement (M5S) chief Beppe Grillo tweeted Friday that MP Luigi Di Maio is suing (Democratic Party president Matteo) Orfini for damages after he said the M5S "has the same line" as the mafia. Orfini is also the special commissioner for the Rome branch of the ruling PD after several of its local officials were arrested in a sweeping probe into an alleged crime syndicate based in the nation's capital involving politicians, businessmen, and mobsters. "I wish to explain to the M5S, whose main figures are idolized by Ostia (mob) clans, that becoming idols of the clans is no coincidence when one has the same line as a clan, when one's leader says 'the mafia doesn't exist' and one calls for (Rome Mayor Ignazio) Marino - who fights crime - to go home," Orfini said said at a press conference Thursday after the arrest of 44 suspects, including several PD officials and ex-officials. "The Marino administration is a bulwark against organized crime," Orfini said referring Rome Mayor Ignazio Marino's city executive. "Orfini is very good at playing with his Play Station like a 15-year-old while the mafia gobbles Rome up," Grillo wrote on his popular blog. "Mafia Capitale is not a videogame or a TV series," he wrote on the post that came with a photo of Orfini and Premier Matteo Renzi using a Play Station during a regional election vote count last weekend.